1
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

The number of hydrogen atoms present in 5.4 g of urea is:

(Given: Molar mass of urea : $60 \mathrm{~g} \mathrm{~mol}^{-1}$

$\mathrm{N}_{\mathrm{A}}: 6.022 \times 10^{23}$ particles $\mathrm{mol}^{-1}$ )

A

$1.084 \times 10^{23}$

B

$1.084 \times 10^{22}$

C

$2.168 \times 10^{22}$

D

$2.168 \times 10^{23}$

2
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the incorrect statement from the following:

A

Nitrogen can form $p \pi-p \pi$ multiple bonds with itself.

B

$\quad \mathrm{P}\left(\mathrm{C}_2 \mathrm{H}_5\right)_3$ and $\mathrm{As}\left(\mathrm{C}_6 \mathrm{H}_5\right)_3$ form $\mathrm{d} \pi-\mathrm{d} \pi$ bond with transition metals.

C

Phosphorus, arsenic and antimony show catenation property.

D

Nitrogen can form $d \pi-p \pi$ bond with oxygen.

3
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following is an ambidentate ligand?

A

Ethane-1,2-diamine

B

Ethylenediaminetetraacetate ion

C

Thiocyanate

D

Oxalate

4
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of increasing metallic character of $\mathrm{Na}, \mathrm{Be}, \mathrm{P}, \mathrm{Mg}$ and Si is

A

$\mathrm{P}<\mathrm{Si}<\mathrm{Be}<\mathrm{Mg}<\mathrm{Na}$

B

$\mathrm{P}<\mathrm{Si}<\mathrm{Na}<\mathrm{Mg}<\mathrm{Be}$

C

$\mathrm{P}<\mathrm{Mg}<\mathrm{Be}<\mathrm{Si}<\mathrm{Na}$

D

$\mathrm{Be}<\mathrm{Si}<\mathrm{P}<\mathrm{Mg}<\mathrm{Na}$